The patch titled
Subject: csky: switch to generic version of pte allocation
has been added to the -mm tree. Its filename is
csky-switch-to-generic-version-of-pte-allocation.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/csky-switch-to-generic-version-of-pte-allocation.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/csky-switch-to-generic-version-of-pte-allocation.patch
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------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: csky: switch to generic version of pte allocation
The csky implementation pte_alloc_one(), pte_free_kernel() and pte_free()
is identical to the generic except of lack of __GFP_ACCOUNT for the user
PTEs allocation.
Switch csky to use generic version of these functions.
The csky implementation of pte_alloc_one_kernel() is not replaced because
it does not clear the allocated page but rather sets each PTE in it to a
non-zero value.
The pte_free_kernel() and pte_free() versions on csky are identical to the
generic ones and can be simply dropped.
Link: http://lkml.kernel.org/r/1557296232-15361-6-git-send-email-rppt@xxxxxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Acked-by: Guo Ren <ren_guo@xxxxxxxxx>
Cc: Albert Ou <aou@xxxxxxxxxxxxxxxxx>
Cc: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Cc: Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Greentime Hu <green.hu@xxxxxxxxx>
Cc: Guan Xuetao <gxt@xxxxxxxxxx>
Cc: Guo Ren <guoren@xxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Ley Foon Tan <lftan@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Matt Turner <mattst88@xxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Palmer Dabbelt <palmer@xxxxxxxxxx>
Cc: Paul Burton <paul.burton@xxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Richard Kuo <rkuo@xxxxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Sam Creasey <sammy@xxxxxxxxx>
Cc: Vincent Chen <deanbo422@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/csky/include/asm/pgalloc.h | 30 +++---------------------------
1 file changed, 3 insertions(+), 27 deletions(-)
--- a/arch/csky/include/asm/pgalloc.h~csky-switch-to-generic-version-of-pte-allocation
+++ a/arch/csky/include/asm/pgalloc.h
@@ -8,6 +8,9 @@
#include <linux/mm.h>
#include <linux/sched.h>
+#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
+#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
+
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
pte_t *pte)
{
@@ -39,33 +42,6 @@ static inline pte_t *pte_alloc_one_kerne
return pte;
}
-static inline struct page *pte_alloc_one(struct mm_struct *mm)
-{
- struct page *pte;
-
- pte = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
- if (!pte)
- return NULL;
-
- if (!pgtable_page_ctor(pte)) {
- __free_page(pte);
- return NULL;
- }
-
- return pte;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_pages((unsigned long)pte, PTE_ORDER);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
- pgtable_page_dtor(pte);
- __free_pages(pte, PTE_ORDER);
-}
-
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_pages((unsigned long)pgd, PGD_ORDER);
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
mm-gup-continue-vm_fault_retry-processing-event-for-pre-faults.patch
arm-remove-arch_select_memory_model.patch
s390-remove-arch_select_memory_model.patch
sparc-remove-arch_select_memory_model.patch
asm-generic-x86-introduce-generic-pte_allocfree_one.patch
alpha-switch-to-generic-version-of-pte-allocation.patch
arm-switch-to-generic-version-of-pte-allocation.patch
arm64-switch-to-generic-version-of-pte-allocation.patch
csky-switch-to-generic-version-of-pte-allocation.patch
m68k-sun3-switch-to-generic-version-of-pte-allocation.patch
mips-switch-to-generic-version-of-pte-allocation.patch
nds32-switch-to-generic-version-of-pte-allocation.patch
nios2-switch-to-generic-version-of-pte-allocation.patch
parisc-switch-to-generic-version-of-pte-allocation.patch
riscv-switch-to-generic-version-of-pte-allocation.patch
um-switch-to-generic-version-of-pte-allocation.patch
unicore32-switch-to-generic-version-of-pte-allocation.patch
